I would create a bug for this in the gentoo bugzilla. I think the arm arch team would need to do testing themselves before the keyword is added... but that would probably just require them ensuring the package compiles and works correctly.

Can I just add a bug requesting the keyword or is some more testing required? If so, what tests?

Just open a bug and request the keyword be added. In the bug form add KEYWORDREQ to the "Keywords" field. Also mention that you successfully compiled the package and it works as expected.

Thanks for your contributions! And if you are interested in this kind of thing, consider becoming an Arch Tester. It's also helpful to hang out in the IRC channel of your chosen arch (in this case #gentoo-arm) and work more closely together with the devs. They can use all the help they can get!_________________"Those who deny freedom to others deserve it not for themselves." - Abraham Lincoln
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